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Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG743546432

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG743546432

Diamond specifications and retailer prices

From $439 USD
As of October 30, 2026
Save $1,686 USD (79%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $2,125 USD at With Clarity · As of October 31, 2026
View at With Clarity

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743546432 or 743546432. Listed at 25 retailers as of October 30, 2026, with prices from $439 to $2,125, a $1,686 spread on the same certified stone. With Clarity lists it at $2,125. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743546432
Dimensions11.13 × 5.41 × 3.40 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.13 mm5.41 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743546432
Side View
Table 61.0%Crown 36°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 62.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $892 USD|Low: $270 USD|High: $2,125 USD|Avg: $1,207 USD|-4.2%
Retailer 1
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Retailer 24
With Clarity
October 31, 2026
Retailer 5$439 USD
Retailer 22$491 USD
Retailer 2$492 USD
Retailer 4$545 USD
Retailer 8$627 USD
Retailer 23$700 USD
Retailer 14$770 USD
Retailer 9$771 USD
Retailer 13$823 USD
Retailer 19$874 USD
Retailer 1$892 USD
Retailer 21$936 USD
Retailer 20$1,026 USD
Retailer 11$1,267 USD
Retailer 18$1,327 USD
Retailer 7$1,464 USD
Retailer 3$1,525 USD
Retailer 17$1,687 USD
Retailer 6$1,751 USD
Retailer 12$1,780 USD
Retailer 10$1,784 USD
Retailer 16$1,820 USD
Retailer 15$1,957 USD
Retailer 24$2,004 USD
With Clarity$2,125 USD

27 data points across 25 retailers

25 retailers$439 USD to $2,125 USD

A
Cheapest Retailer
-
$439 USD
A
Retailer 2
-
$491 USD
View
Final sale: no returns
A
Retailer 3
-
$492 USD
View
A
Retailer 4
-
$545 USD
View
A
Retailer 5
-
$627 USD
HK$4,900 HKD
View
A
Retailer 6
-
$700 USD
View
A
Retailer 7
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$770 USD
View
A
Retailer 8
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$771 USD
View
B+
Retailer 9
-
$823 USD
View
B+
Retailer 10
-
$874 USD
€832 EUR
View
B+
Retailer 11
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$892 USD
£703 GBP
View
B+
Retailer 12
-
$936 USD
ZAR 15,122 ZAR
View
B+
Retailer 13
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$1,026 USD
A$1,578 AUD
View
Retailer 14
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$1,267 USD
View
Price last confirmed 7 days ago
B+
Retailer 15
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$1,327 USD
A$2,042 AUD
View
B
Retailer 16
-
$1,464 USD
View
B+
Retailer 17
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$1,525 USD
View
Retailer 18
-
$1,687 USD
A$2,596 AUD
View
Price last confirmed 23 days ago
B
Retailer 19
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$1,751 USD
View
B
Retailer 20
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$1,780 USD
View
B
Retailer 21
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$1,784 USD
View
B
Retailer 22
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$1,820 USD
SGD 2,460 SGD
View
B
Retailer 23
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$1,957 USD
View
B
Retailer 24
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$2,004 USD
£1,578 GBP
View
Most Expensive
B
With Clarity
743546432 · Oct 31
$2,125 USD
View
24 more retailers have this diamond
Prices start from $439 USDSave up to $1,686 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.20ct Marquise
$439 USD